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Mise en evidence et evaluation de l'enrichissement bacterien du film de surface des eaux littorales d'effluents urbains ArchiMer
Beucher, M; Plusquellec, A; Legal, Y; Cleret, J.
Sea water samples were collected in the vicinity of urban non-treated, urban treated and industrial outfalls. The samples belonged to two differents types: the first one consisted of the surface film, the second was the corresponding water at 50 cm depth. The enumeration of the bacteria in both types of samples indicated a significant concentration of the mesophilic flora and of the indicators of fecal pollution in the surface film. The value of the concentrating factor depended largely on the nature of the sewage and did not reflect differences between the various bacterial groups. At one of the stations a very significant regression was demonstrated between surface sample and depth sample.
Tipo: Text Palavras-chave: Bacteria; Bacteriology; Bacterial counters; Industrial wastes; Pollution indicators; Coastal waters; Microbial contamination; Indicator species; Sewage; Outfalls; Surface films.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1006.pdf
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Etude experimentale de la colonisation de surfaces par les bacteries, en eau de mer circulante ArchiMer
Fera, P; Prieur, D.
Before the building of an (OTEC) power plant, and experimental station was built near the entrance of the Bay of Brest in order to do preliminary studies. Using these facilities, the bacterial colonization of three substrata (stainless steel UB6, aluminium AG4, polycarbonate filters) was studied in an open seawater system, with a speed of 0,7 m s super(-1). The study was performed between May 1983 and May 1984, including seven experiments of 15 days each. Bacteria colonizing the metallic surfaces were counted by scanning electron microscopy, and bacteria colonizing the polycarbonate filters counted by epifluorescence microscopy. On the three substrata, bacterial colonization occurred in three successive stages: initial colonization, sometimes unsteady...
Tipo: Text Palavras-chave: Fouling; OTEC plants; Bacteria; Colonization; Adhesion; Microbiological analysis; Surface films.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-964.pdf
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